Q&A for programmers
SELECT Avg(CAST(score as decimal (10,5))) Avg_Score, CAST(SUM(CASE WHEN ClosedDate IS NOT NULL THEN 1 ELSE 0 END) as Decimal(15,5)) /CAST(Count(Id) as decimal(15,5)) CloseCountPercentage, Month(creationdate) month, Year(creationdate) year FROM posts p WHERE posttypeid = 1 GROUP BY Month(creationdate), Year(creationdate) ORDER BY Year(creationdate), Month(creationdate)
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